/in/foo.cc: In function 'unsigned int leftRotateDigit(unsigned int, int)':
/in/foo.cc:19:18: warning: unused variable 'multiplier' [-Wunused-variable]
     unsigned int multiplier = 1;
                  ^~~~~~~~~~
/in/foo.cc:47:9: warning: unused variable 'u' [-Wunused-variable]
     int u = 0;
         ^